Electronic telephone system



Jan. 17, 1961 Filed June 1. 1956 LOCAL LINES INFORMATION CENTER BAKERELECTRONIC 2O TRUNKS 3"A"TRUNKS 4''B"TRUNKS 50o LINES HILLSIDE (44)ELECTRONIC R.- B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM C.D.O.

50o LINES 36 Sheets-Sheet 1 FIG. 2

T NUMBERING SYSTEM BAKER OFFICE DEXTER OFFICE HILLSIDE OFFICE (22) (500LINES) (33) (400 LINES) (44) (500 LINES) BA-5ll TO BA-50o DE-5|I TOoE-soo m-su To Hl-SOO BA-6ll TO BA-6OO DE-6ll TO DE- 600 Hl-6ll TOHl-600 BA- 7n T0 BA- 100 05-?" To, DE-TOO Hlm TO m-1oo BA- an TO BA- 80005-8 TO oE-aoo m-an TO m-aoo BA-9II TO BA-9OO Hl- 9n TO m-soo MAIN DIALOFFICE CENTER INVENTOR INFORMATION H3 PREF'X 9 ROBERT E. TROUSDALEREPAIR sERvlcE n4 (ACCESSIBLE ONLY FROM BUSINESS OFFICE n5 LONG DISTANCEOPERATOR BY TIME OF DAY us AND CERTAIN PREFERRED WEATHER ||7 suBscfuaERsm LONG DISTANCE o DEXTER oFFlc ATTORNEY Jan. 17, 1961 R. B. TROUSDALE2,968,696

ELECTRONIC TELEPHONE SYSTEM Filed June 1, 1956 36 Sheets-Sheet 3INFORMATION CENTER -46 75g; 829; 54a. INOOMING TRUNK INFORMATION 3SELECTOR OPERATOR mcoume 76$ 82 "TRUNKS-54 mcomme P FROM SELECTOR TRUNKBAKER 54A 82- 513 mcomme Z SELECTOR TRUNK 545 [75g 54; REPAIR SERVICE 9mcomue SELECTOR TRUNK Q mcomue 78; 86 a "A"TRUNKS-60 g s im gi BUSINESSL TRUNK OFFICE 222:, OPERATOR 76; T? mcomms SELECTOR TRUNK Os 7 60 86s70s mcomme SELECTOR TRUNK a INCOMING Q 88; "A"TRuNKs-ro INCOMINGAUTOMATIC FROM 706 SELECTOR TRUNK ANNOUNCER HILLSIDE TIME OF DAY 1'?mcomme so;

SELECTOR AUTOMATIC TRUNK ANNOUNCER 8 70a WEATHER mcomus 52s "a" mums-52J i FIG.4 BAKER OFFICE-4O k 4 LONG DISTANCE NCOMING OPERATOR"B"TRUNKS-62 2o mom oureome DEXTER mums-14 OFFICE-42 T0 8 DEXTER mcommeerr-1cm: "B"TRUNK$-72 -42 FROM HILLSIDE OFFICE -44 Jan. 17, 1961 R. B.TROUSDALE ,9

ELECTRONIC TELEPHONE SYSTEM Filed June 1, 1956 5e Sheets-Sheet 5 Jan.17, 1961 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 36 Sheets-Sheet 6Filed June 1, 1956 hzminzncu 202200 20mm .rzuzmsau 202200 20mm mEbwzzoo@PEuo 005 223 mohouzzou I mohmuvud .544

mpzmuzuw wma mohom Z200 Eek-mu Ow MOELO mm x m Jm w4 mourn-20:50

Jan. 17, 1961 R. B. TROUSDALE 2,958,696

ELECTRONIC TELEPHONE SYSTEM Filed June 1, 1956 36 Sheets-Sheet 9 wwm3-5.55 CD050 mohmuoo Jan. 17, 1961 R. B. TROUSDALE ELECTRONIC TELEPHONESYSTEM 36 Sheets-Sheet 11.

Filed June 1, 1956 Jan. 17', 1961 R. B. TROUSDALE 2,968,696

ELECTRONIC TELEPHONE SYSTEM Filed June 1, 1956 36 Sheets-Sheet 13 R. B.TROUSDALE ELECTRONIC TELEPHONE sYsTEM Jan. 17, 1961 56 Sheets-Sheet 15Filed June 1, 1956 Jan. 17, 1961 R. B. TROUSDALE ELECTRONIC TELEPHONESYSTEM 36 Sheets-Sheet 19 Filed June 1, 1956 ON QE non-m I prow -mm 400J um u OOON FSUEO mwn um muhmmvwm QZ ZOChmOmm .595

Jan. 17, 1961 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM '36Sheets-Sheet 20 Filed June 1, 1956 mam NQNJCDOEQ 02-22. Iomm muzmnoumwoumczst MQNN \mSW

